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arXiv physics/0607032physics.optics
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纳米棒阵列中的光传播

Light propagation in nanorod arrays

A. I. Rahachou, I. V. Zozoulenko

摘要:

我们研究了TM-和TE-偏振光在明胶背景中的各种直径的银纳米棒的二维阵列中的传播。我们计算了有序和无序纳米棒阵列的透射率、反射率和吸收率,并将精确的数值结果与Maxwell-Garnett有效介质理论的预测进行了比较。我们发现,纳米棒,多极贡献和光子带隙的形成之间的相互作用强烈影响的透射光谱,不能占在传统的有效介质理论。我们还演示和解释了随机定位棒阵列的透射率的退化以及它们的波动直径的微弱影响。对于TM模式,我们概述了趋肤效应的重要性,它导致入射光的全反射。然后,我们说明了使用纳米棒的周期性阵列作为高品质的偏振器的可能性。

英文摘要:

We study propagation of TM- and TE-polarized light in two-dimensional arrays of silver nanorods of various diameters in a gelatin background. We calculate the transmittance, reflectance and absorption of arranged and disordered nanorod arrays and compare the exact numerical results with the predictions of the Maxwell-Garnett effective-medium theory. We show that interactions between nanorods, multipole contributions and formations of photonic gaps affect strongly the transmittance spectra that cannot be accounted for in terms of the conventional effective-medium theory. We also demonstrate and explain the degradation of the transmittance in arrays with randomly located rods as well as weak influence of their fluctuating diameter. For TM modes we outline the importance of skin-effect, which causes the full reflection of the incoming light. We then illustrate the possibility of using periodic arrays of nanorods as high-quality polarizers.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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